Ceramtec Gmbh

Cerasiv Gmbh Innovatives Keramik-engineering

Ceramtec Ag

Michael Fripan

Kilian Friederich

Hans-Jürgen Schreiner

Raouf Ben Amor

Wolfgang Burger

Kurt Handschuh

Hans Andersch

Gert Richter

Konrad Tzschentke

Daniel Von Buren

Johannes Schneider

Siegbert Lehmann

Stefan Gernsheimer

Patterns detection to input data containing a plurality of transactions, each transaction having at least one item, is carried out in the following way. Filter conditions for interesting patterns are received, and a first wet of filter conditions applicable in connection with generation of candidate patterns is determined.

Apparatus and method for controlling the machining of workpieces using piezoceramic transducers

Structural components that are subject to high stresses, especially caused by wear, can be protected by coating them with a hard material. For metal-cutting tools it is for example known that their wear resistance can be improved by coating them with a hard material. Different thermal expansion coefficients of the substrate material and the coating material and different layer materials in a multilayer coating may produce great stresses. The stress increases as the thickness of the coating increases, thereby increasing the danger of the coating chipping off. In order to solve this problem, the invention proposes an intermediate layer () to be interposed between at least two layers () of the coating (), said intermediate layer mainly or exclusively consisting of a material component () of an element of the fourth to eighth subgroup of the fourth and fifth period of the periodic system.

Structural component coated with a hard material and comprising an intermediate layer for improving the adhesive strength of the coating

Zirconium dioxide containing 2 to 40 vol. % of stabilizing oxides is embedded in the matrix material of a sintered molding consisting of an aluminum oxide/chromium oxide mixed crystal. The quantity of stabilizing oxides added is chosen so that the zirconium dioxide is predominantly tetragonal. The molar ratio of the zirconium dioxide containing the stabilizing oxides to the chromium oxide is between 1000:1 and 20:1 and the zirconium dioxide has a maximum particle size of 2 .mu.m.

Sintered molding

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Backnang, Germany

Michael Fripan